Pentair R172022 old style chlorine control valve for Model 300 automatic chemical feedersPentair R172022 Old Style Chlorine Control Valve In stock$3399
Pentair R172022 old style chlorine control valve for Model 300 automatic chemical feeders
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Pentair R172022 Old Style Chlorine Control Valve

Ask a questionMPN R172022
$3399
In stock
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Quick overview

  • Old style valve The earlier control valve design, not the later revision.
  • Four feeder models Listed for the Model 300, 302, 300-19 and 300-29 automatic chemical feeders.
  • Sets the feed rate The control valve is what meters how much water passes through the chlorinator.
  • Genuine Pentair Factory part number R172022.
  • A known wear item Tablet residue and constant chemical contact seize control valves in time.
  • Match the part number Because this is the old style, confirm R172022 against your feeder before ordering.
Full description and specifications ↓

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Product details

The Pentair R172022 is the old style chlorine control valve for the Model 300, 302, 300-19 and 300-29 automatic chemical feeders.

What it controls

An off line tablet feeder works by diverting a small share of the return flow through the chlorinator body, where it dissolves tablets before rejoining the line. The control valve is what sets that share. Turn it up and the feeder dissolves faster, turn it down and output drops. It is the only real adjustment on the feeder.

Why they fail

The valve lives in the most chemically aggressive spot in the whole system. Undissolved tablet residue and calcium build on the stem until the knob spins without doing anything, or the valve sticks wide open and the pool runs hot on chlorine. Replacing the valve restores the adjustment.

Before you order

This is specifically the old style valve. Check R172022 against your feeder so you get the version that matches.

Specifications
Brand Pentair
Manufacturer part number R172022
UPC 788379701567
Type Chlorine control valve
Style Old style
Fits Model 300, 302, 300-19, 300-29 Automatic Chemical Feeder
Shipping weight 0.05 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which feeders does this valve fit?
The Model 300, 302, 300-19 and 300-29 automatic chemical feeders.
What does old style mean?
It identifies the earlier of the control valve designs used on this feeder family. Check the part number against your feeder so you get the matching version.
What does the control valve do?
It meters the water routed through the feeder, which is how you dial the chlorine output up or down.
Why has mine stopped adjusting?
Tablet residue and calcium build on the valve and seize it, so the knob turns without changing anything. Once it will not free up, replace it.
Ask your own question